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/**
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/**
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 * Initializes the timer engine. The hardware timer interrupt source will be
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 * Initializes the timer engine. The hardware timer interrupt source will be
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 * enabled, but global interrupts need to be enabled by the application.
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 * enabled, but global interrupts need to be enabled by the application.
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 */
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 */
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void timerInit(void);
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void Timer_Init(void);
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/**
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/**
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 * Reads the current time.
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 * Reads the current time.
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 *
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 *
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 * @return
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 * @return
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 *      The current time in ticks. The tick count wraps around after 2^32
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 *      The current time in ticks. The tick count wraps around after 2^32
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 *      ticks without any notification.
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 *      ticks without any notification.
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 */
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 */
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uint32_t timerGetTicks(void);
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uint32_t Timer_GetTicks(void);
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/**
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/**
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 * Initializes a software timer and starts it.
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 * Initializes a software timer and starts it.
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 *
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 *
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 * @param timer
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 * @param timer
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 *      Pointer to optional callback function on the form
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 *      Pointer to optional callback function on the form
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 *      void callback(uint8_t timer). The callback function is called with the
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 *      void callback(uint8_t timer). The callback function is called with the
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 *      timer number as the argument whenever the timer expires. It is called
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 *      timer number as the argument whenever the timer expires. It is called
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 *      from the interrupt handler and must be very short. Null if not used.
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 *      from the interrupt handler and must be very short. Null if not used.
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 */
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 */
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void timerSetTimeout(uint8_t timer, uint16_t timeout, uint8_t type, timerCallback_t callback);
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void Timer_SetTimeout(uint8_t timer, uint16_t timeout, uint8_t type, timerCallback_t callback);
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/**
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/**
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 * Checks if a timer has expired. The timer will only signal its expiration at
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 * Checks if a timer has expired. The timer will only signal its expiration at
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 * the first call to this function after a timeout period, even if multiple
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 * the first call to this function after a timeout period, even if multiple
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 * timeout periods have elapsed since the previous call.
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 * timeout periods have elapsed since the previous call.
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 * @param timer
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 * @param timer
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 *      The timer (0<=timer<TIMER_NUM_TIMERS).
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 *      The timer (0<=timer<TIMER_NUM_TIMERS).
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 * @return
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 * @return
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 *      Non-zero if timer has expired since the previous check.
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 *      Non-zero if timer has expired since the previous check.
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 */
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 */
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uint8_t timerExpired(uint8_t timer);
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uint8_t Timer_Expired(uint8_t timer);
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#endif /*TIMER_H_*/
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#endif /*TIMER_H_*/